Continuum-continuum transitions between resonant states using the RABITT technique

28th International Conference on Photonic, Electronic and Atomic Collisions

Jiménez, A.^1 ; Argenti, L.^1 ; Martín, F.^1,2

Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Madrid

28049, Spain^1

Institute Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Cantoblanco, Madrid

28049, Spain^2

关键词: Autoionizing state;    Continuum-continuum transitions;    Doubly excited state;    Numerical solution;    Perturbative model;    Single active electron approximations;    Time dependent Schrodinger equation;    Transition amplitudes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/2/022014/pdf
DOI  :  10.1088/1742-6596/488/2/022014

来源: IOP

【 摘 要 】

We present a study of radiative continuum-continuum transitions in helium in the presence of doubly-excited states by using the attosecond RABITT technique beyond the Single Active Electron approximation. On the one hand, transition amplitudes between correlated continuum states are calculated both by direct numerical solution of the time-dependent Schrodinger equation as well as with a two-photon perturbative model. The effect of autoionizing states on the sideband phaseshift is thus analyzed. On the other hand, we apply the soft-photon approximation to quantify the effects the IR probe intensity on the sideband non-resonant overtone components.